# AD 87-21-02 R1: Fuel Filler Openings - Type: Airworthiness directive - Status: Current - Products: Cessna 310D, 310E, 310F, 310G, 310H, 310I, 310J, 310J-1, 310K, 310L, 310N, 310P and 32 more - Effective: June 16, 1989 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small airplane - Amendment: 39-6215 - Registered aircraft: 3,959 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5AD33335966D07BC86256A4F00459022.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/87-21-02-R1 ## The airworthiness directive 87-21-02 R1 CESSNA: Amendment 39-5740 as revised by Amendment 39-6215. Applicability: The following airplanes equipped with reciprocating engines certificated in any category: MODEL SERIAL NUMBER T303 T30300001 thru T30300301 310D 39032 thru 39299 310E 310M0001 thru 310M0036 310F 310-0001 thru 310-0156 310G thru 310R (Including T310P, T310Q and T310R) 310G0001 thru 310R2140 320 thru 320F 320-0001 thru 320F0045 335 335-0001 thru 335-0065 340 thru 340A 340-0001 thru 340A1543 401 thru 401B 401-0001 thru 401B0221 402 thru 402C 402-0001 thru 402C0653 404 404-0001 thru 404-0859 411 thru 411A 411-0001 thru 411A0300 414 thru 414A 414-0001 thru 414A0858 421 thru 421C 421-0001 thru 421C1257 Compliance: Required as indicated in the body of the AD, unless already accomplished per the unrevised version of this AD. To preclude misfueling of the airplane resulting in engine failure, accomplish the following: (a) Within the next 12 calendar months after the effective date of this AD, unless already accomplished, modify all fuel filler opening(s) in accordance with the instructions contained in Cessna Service Information Letter ME84-31 dated July 20, 1984. (b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished. (c) In accordance with FAR Part 43, Appendix A, Item (c) 29, the modifications required by this AD (except installation of the SK303-29 kit) is preventative maintenance and may be performed by the holder of a pilot certificate issued under FAR Part 61 on airplanes owned or operated by him subject to the limitations of FAR 43.3(a). The maintenance record entries required by FAR 43.9 and FAR 91.173 must be accomplished. (d) An equivalent means of compliance with this AD may be used if approved by the Manager, Wichita Aircraft Certification Office, Federal Aviation Administration, 1801 Airport Road, Room 100, Wichita, Kansas 67209.All persons affected by this directive may obtain copies of the document(s) referred to herein upon request to Cessna Aircraft Company, Customer Services, Post Office Box 1521, Wichita, Kansas 67201; or may examine these documents at the FAA, Office of the Assistant Chief Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106. This AD revises AD 87-21-02, Amendment 39-5740 which became effective on November 2, 1987. This amendment (39-6215, AD 87-21-02 R1) becomes effective on June 16, 1989. ## Affected data sheets (5) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS 3A10](https://openairdocs.org/tcds/3A10): Textron Aviation Inc.; names 17 of 23 models: 310I, 310L, T310Q, 310P, T310R, T310P, 310R, 310Q… - [TCDS A7CE](https://openairdocs.org/tcds/A7CE): Textron Aviation Inc.; names 15 of 16 models: 421C, 402C, 402B, 411A, 414, 402, 421B, 421A… - [TCDS 3A25](https://openairdocs.org/tcds/3A25): Textron Aviation Inc.; names 10 of 11 models: 320, 320D, 320B, 320E, 335, 340A, 320C, 320F… - [TCDS A25CE](https://openairdocs.org/tcds/A25CE): Textron Aviation Inc.; names 1 of 2 models: 404 - [TCDS A34CE](https://openairdocs.org/tcds/A34CE): Textron Aviation Inc.; names 1 of 1 models: T303 ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 3,959 (3,959 by airframe model, 0 by engine model) - Makers: Cessna 3,959 Models with the most aircraft: - [Cessna 340A](https://openairdocs.org/model/cessna-340a): 543 aircraft (airframe model) - [Cessna 421C](https://openairdocs.org/model/cessna-421c): 496 aircraft (airframe model) - [Cessna 414A](https://openairdocs.org/model/cessna-414a): 363 aircraft (airframe model) - [Cessna 310R](https://openairdocs.org/model/cessna-310r): 361 aircraft (airframe model) - [Cessna 310Q](https://openairdocs.org/model/cessna-310q): 277 aircraft (airframe model) - [Cessna 414](https://openairdocs.org/model/cessna-414): 242 aircraft (airframe model) - [Cessna 421B](https://openairdocs.org/model/cessna-421b): 225 aircraft (airframe model) - [Cessna 340](https://openairdocs.org/model/cessna-340): 164 aircraft (airframe model) - [Cessna T310R](https://openairdocs.org/model/cessna-t310r): 140 aircraft (airframe model) - [Cessna 402C](https://openairdocs.org/model/cessna-402c): 115 aircraft (airframe model) - [Cessna 310K](https://openairdocs.org/model/cessna-310k): 78 aircraft (airframe model) - [Cessna 310L](https://openairdocs.org/model/cessna-310l): 62 aircraft (airframe model) - [Cessna 310P](https://openairdocs.org/model/cessna-310p): 61 aircraft (airframe model) - [Cessna 310I](https://openairdocs.org/model/cessna-310i): 60 aircraft (airframe model) - [Cessna T303](https://openairdocs.org/model/cessna-t303): 59 aircraft (airframe model) - [Cessna 310J](https://openairdocs.org/model/cessna-310j): 59 aircraft (airframe model) - [Cessna 310D](https://openairdocs.org/model/cessna-310d): 56 aircraft (airframe model) - [Cessna 310N](https://openairdocs.org/model/cessna-310n): 55 aircraft (airframe model) - [Cessna T310Q](https://openairdocs.org/model/cessna-t310q): 50 aircraft (airframe model) - [Cessna 402B](https://openairdocs.org/model/cessna-402b): 49 aircraft (airframe model) All 45 models: https://openairdocs.org/ad/87-21-02-R1/models.md Every aircraft: https://openairdocs.org/ad/87-21-02-R1/aircraft.md Its text cites no advisory circulars or STCs. ## NTSB investigations that cite this AD (3) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB CEN15LA199](https://openairdocs.org/ntsb/CEN15LA199), Apr 17, 2015: Cessna 421B (N421PK), Diboll, TX, substantial damage. Probable cause: The total loss of engine power due to the use of an improper fuel type. Contributing to the accident were the servicing of the airplane with the improper fuel, noncompliance with an airworthiness… - [NTSB CEN09LA145](https://openairdocs.org/ntsb/CEN09LA145), Jan 30, 2009: Cessna 421C (N345JB), Wichita, KS, substantial damage. Probable cause: The failure of line personnel to ensure that the airplane was serviced with the proper fuel. Contributing to the accident was the Federal Aviation Administration's approval of a Supplemental Type… - [NTSB FTW94FA082](https://openairdocs.org/ntsb/FTW94FA082), Feb 10, 1994: Cessna 421C (N741CA), San Antonio, TX, destroyed, 2 fatal. Probable cause: IMPROPER SERVICING OF THE AIRPLANE WITH JET FUEL, WHICH RESULTED IN PREIGNITION AND/OR DETONATION AND SUBSEQUENT FAILURE OF PISTONS IN BOTH ENGINES. A FACTOR RELATED TO THE ACCIDENT WAS: THE LACK OF… --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.